Visatron 10980, Руководство по эксплуатации

Страница: 46 / 73

Rough filter side
outwards!
Use cotton sticks only,
otherwise the glasses
may be damaged!
4. 02
Operating Instruction Visatron VN 93
Maintenance work to be carried out regularly. In case of non-compliance, the
manufacturer’s liability expires. Maintenance work has to be documented.
Monthly:
Check the negative pressure in the measuring head
(range 60 - 80 mm H
2
O, see 3. 01)
Quarterly:
Replace the sintered bronze filter in the measuring head.
(see 5.03/1)
Attention: Filters cannot be cleaned.
Clean the infrared filter glasses in the measuring head
(see Fig. 5. 05 / 1)
Every 6 months:
Only with siphon block assembly system,
optional for all OMD device types.
In order to do so:
Remove header pipes from the connecting box,
(VN 115 / 93) or from the valve box of VN 116 / 93, or individual
pipes from valve box of VN 215 / 93 (to ensure that the device is
not contaminated during the cleaning operation).
Remove siphon block plug, blow-clean the siphons with
compressed air (max. 7 bar), mount the header or the individual
suction pipes and siphon block plug, tighten accordingly.
Subsequently fill the siphon blocks with lubricating oil
(see Fig. 4. 02 / 1) according filling instruction in chapter 3.02
06. 04
!
4. 02 / 1
10 mm wrench
remove plug to
blow-clean
siphon blocks with
compressed air
remove plug to
fill siphon block
with lubricating oil